+++ /dev/null
-/*
- * Create N GLX windows/contexts and render to them in round-robin order.
- * Also, have the contexts share all texture objects.
- * Press 'd' to delete a texture, 'u' to unbind it.
- *
- * Copyright (C) 2000 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-#include <GL/gl.h>
-#include <GL/glx.h>
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <X11/keysym.h>
-
-
-/*
- * Each display/window/context:
- */
-struct head {
- char DisplayName[1000];
- Display *Dpy;
- Window Win;
- GLXContext Context;
- float Angle;
- char Renderer[1000];
- char Vendor[1000];
- char Version[1000];
-};
-
-
-#define MAX_HEADS 200
-static struct head Heads[MAX_HEADS];
-static int NumHeads = 0;
-static GLboolean SwapSeparate = GL_TRUE;
-static GLuint TexObj = 0;
-
-
-static void
-Error(const char *display, const char *msg)
-{
- fprintf(stderr, "Error on display %s - %s\n", XDisplayName(display), msg);
- exit(1);
-}
-
-
-static struct head *
-AddHead(const char *displayName, const char *name)
-{
- Display *dpy;
- Window win;
- GLXContext ctx;
- int attrib[] = { GLX_RGBA,
- GLX_RED_SIZE, 1,
- GLX_GREEN_SIZE, 1,
- GLX_BLUE_SIZE, 1,
- GLX_DOUBLEBUFFER,
- None };
- int scrnum;
- XSetWindowAttributes attr;
- unsigned long mask;
- Window root;
- XVisualInfo *visinfo;
- int width = 90, height = 90;
- int xpos = 0, ypos = 0;
-
- if (NumHeads >= MAX_HEADS)
- return NULL;
-
- dpy = XOpenDisplay(displayName);
- if (!dpy) {
- Error(displayName, "Unable to open display");
- return NULL;
- }
-
- scrnum = DefaultScreen(dpy);
- root = RootWindow(dpy, scrnum);
-
- visinfo = glXChooseVisual(dpy, scrnum, attrib);
- if (!visinfo) {
- Error(displayName, "Unable to find RGB, double-buffered visual");
- return NULL;
- }
-
- /* window attributes */
- xpos = (NumHeads % 10) * 100;
- ypos = (NumHeads / 10) * 100;
- printf("%d, %d\n", xpos, ypos);
- attr.background_pixel = 0;
- attr.border_pixel = 0;
- attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
- attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
- mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
-
- win = XCreateWindow(dpy, root, xpos, ypos, width, height,
- 0, visinfo->depth, InputOutput,
- visinfo->visual, mask, &attr);
- if (!win) {
- Error(displayName, "Couldn't create window");
- return NULL;
- }
-
- {
- XSizeHints sizehints;
- sizehints.x = xpos;
- sizehints.y = ypos;
- sizehints.width = width;
- sizehints.height = height;
- sizehints.flags = USSize | USPosition;
- XSetNormalHints(dpy, win, &sizehints);
- XSetStandardProperties(dpy, win, name, name,
- None, (char **)NULL, 0, &sizehints);
- }
-
- if (NumHeads == 0) {
- ctx = glXCreateContext(dpy, visinfo, NULL, True);
- }
- else {
- /* share textures & dlists with 0th context */
- printf("sharing\n");
- ctx = glXCreateContext(dpy, visinfo, Heads[0].Context, True);
- }
- if (!ctx) {
- Error(displayName, "Couldn't create GLX context");
- return NULL;
- }
-
- XMapWindow(dpy, win);
-
- if (!glXMakeCurrent(dpy, win, ctx)) {
- Error(displayName, "glXMakeCurrent failed");
- printf("glXMakeCurrent failed in Redraw()\n");
- return NULL;
- }
-
- if (NumHeads == 0) {
- /* create texture object now */
- static const GLubyte checker[2][2][4] = {
- { {255, 255, 255, 255}, { 0, 0, 0, 255} },
- { { 0, 0, 0, 0}, {255, 255, 255, 255} }
- };
- glGenTextures(1, &TexObj);
- assert(TexObj);
- glBindTexture(GL_TEXTURE_2D, TexObj);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGB,
- GL_UNSIGNED_BYTE, checker);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- }
- else {
- /* bind 0th context's texture in this context too */
- assert(TexObj);
- glBindTexture(GL_TEXTURE_2D, TexObj);
- }
- glEnable(GL_TEXTURE_2D);
-
- /* save the info for this head */
- {
- struct head *h = &Heads[NumHeads];
- const char * tmp;
-
- if (strlen(name) + 1 > sizeof(h->DisplayName)) {
- Error(displayName, "name string overflow");
- return NULL;
- }
- strcpy(h->DisplayName, name);
-
- h->Dpy = dpy;
- h->Win = win;
- h->Context = ctx;
- h->Angle = 0.0;
-
- tmp = (char *) glGetString(GL_VERSION);
- if (strlen(tmp) + 1 > sizeof(h->Version)) {
- Error(displayName, "GL_VERSION string overflow");
- return NULL;
- }
- strcpy(h->Version, tmp);
-
- tmp = (char *) glGetString(GL_VENDOR);
- if (strlen(tmp) + 1 > sizeof(h->Vendor)) {
- Error(displayName, "GL_VENDOR string overflow");
- return NULL;
- }
- strcpy(h->Vendor, tmp);
-
- tmp = (char *) glGetString(GL_RENDERER);
- if (strlen(tmp) + 1 > sizeof(h->Renderer)) {
- Error(displayName, "GL_RENDERER string overflow");
- return NULL;
- }
- strcpy(h->Renderer, tmp);
-
- NumHeads++;
- return &Heads[NumHeads-1];
- }
-
-}
-
-
-static void
-DestroyHeads(void)
-{
- int i;
- for (i = 0; i < NumHeads; i++) {
- XDestroyWindow(Heads[i].Dpy, Heads[i].Win);
- glXDestroyContext(Heads[i].Dpy, Heads[i].Context);
- XCloseDisplay(Heads[i].Dpy);
- }
-}
-
-
-static void
-Redraw(struct head *h)
-{
- if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
- Error(h->DisplayName, "glXMakeCurrent failed");
- printf("glXMakeCurrent failed in Redraw()\n");
- return;
- }
-
- h->Angle += 1.0;
-
- glShadeModel(GL_FLAT);
- glClearColor(0.5, 0.5, 0.5, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- /* draw green triangle */
- glColor3f(0.0, 1.0, 0.0);
- glPushMatrix();
- glRotatef(h->Angle, 0, 0, 1);
- glBegin(GL_TRIANGLES);
- glTexCoord2f(0.5, 1.0); glVertex2f(0, 0.8);
- glTexCoord2f(0.0, 0.0); glVertex2f(-0.8, -0.7);
- glTexCoord2f(1.0, 0.0); glVertex2f(0.8, -0.7);
- glEnd();
- glPopMatrix();
-
- if (!SwapSeparate)
- glXSwapBuffers(h->Dpy, h->Win);
-}
-
-
-static void
-Swap(struct head *h)
-{
- glXSwapBuffers(h->Dpy, h->Win);
-}
-
-
-static void
-Resize(const struct head *h, unsigned int width, unsigned int height)
-{
- if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
- Error(h->DisplayName, "glXMakeCurrent failed in Resize()");
- return;
- }
- glFlush();
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
-}
-
-
-
-static void
-EventLoop(void)
-{
- while (1) {
- int i;
- for (i = 0; i < NumHeads; i++) {
- struct head *h = &Heads[i];
- while (XPending(h->Dpy) > 0) {
- XEvent event;
- XNextEvent(h->Dpy, &event);
- if (event.xany.window == h->Win) {
- switch (event.type) {
- case Expose:
- Redraw(h);
- if (SwapSeparate)
- Swap(h);
- break;
- case ConfigureNotify:
- Resize(h, event.xconfigure.width, event.xconfigure.height);
- break;
- case KeyPress:
- {
- char buf[100];
- KeySym keySym;
- XComposeStatus stat;
- XLookupString(&event.xkey, buf, sizeof(buf), &keySym, &stat);
- switch (keySym) {
- case XK_Escape:
- return;
- break;
- case XK_d:
- case XK_D:
- printf("Delete Texture in window %d\n", i);
- glXMakeCurrent(h->Dpy, h->Win, h->Context);
- glDeleteTextures(1, &TexObj);
- break;
- case XK_u:
- case XK_U:
- printf("Unbind Texture in window %d\n", i);
- glXMakeCurrent(h->Dpy, h->Win, h->Context);
- glBindTexture(GL_TEXTURE_2D, 0);
- break;
- }
- }
- break;
- default:
- /*no-op*/ ;
- }
- }
- else {
- printf("window mismatch\n");
- }
- }
- }
-
- /* redraw all windows */
- for (i = 0; i < NumHeads; i++) {
- Redraw(&Heads[i]);
- }
- /* swapbuffers on all windows, if not already done */
- if (SwapSeparate) {
- for (i = 0; i < NumHeads; i++) {
- Swap(&Heads[i]);
- }
- }
- usleep(1);
- }
-}
-
-
-
-static void
-PrintInfo(const struct head *h)
-{
- printf("Name: %s\n", h->DisplayName);
- printf(" Display: %p\n", (void *) h->Dpy);
- printf(" Window: 0x%x\n", (int) h->Win);
- printf(" Context: 0x%lx\n", (long) h->Context);
- printf(" GL_VERSION: %s\n", h->Version);
- printf(" GL_VENDOR: %s\n", h->Vendor);
- printf(" GL_RENDERER: %s\n", h->Renderer);
-}
-
-
-int
-main(int argc, char *argv[])
-{
- char *dpyName = NULL;
- int i;
-
- if (argc == 1) {
- printf("manywin: open N simultaneous glx windows\n");
- printf("Usage:\n");
- printf(" manywin [-s] numWindows\n");
- printf("Options:\n");
- printf(" -s = swap immediately after drawing (see src code)\n");
- printf("Example:\n");
- printf(" manywin 10\n");
- return 0;
- }
- else {
- int n = 3;
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-s") == 0) {
- SwapSeparate = GL_FALSE;
- }
- else if (strcmp(argv[i], "-display") == 0 && i < argc) {
- dpyName = argv[i+1];
- i++;
- }
- else {
- n = atoi(argv[i]);
- }
- }
- if (n < 1)
- n = 1;
- if (n > MAX_HEADS)
- n = MAX_HEADS;
-
- printf("%d windows\n", n);
- for (i = 0; i < n; i++) {
- char name[100];
- struct head *h;
- sprintf(name, "%d", i);
- h = AddHead(dpyName, name);
- if (h) {
- PrintInfo(h);
- }
- }
- }
-
- EventLoop();
- DestroyHeads();
- return 0;
-}
projects / mesa.git / blobdiff